65 lines
1.7 KiB
Markdown
65 lines
1.7 KiB
Markdown
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# EIP-7549 -- The Beacon Chain
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## Table of contents
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<!-- TOC -->
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<!-- START doctoc generated TOC please keep comment here to allow auto update -->
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<!-- DON'T EDIT THIS SECTION, INSTEAD RE-RUN doctoc TO UPDATE -->
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- [Introduction](#introduction)
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- [Containers](#containers)
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- [Extended containers](#extended-containers)
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- [AttestationData](#attestationdata)
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- [Attestation](#attestation)
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- [Helper functions](#helper-functions)
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- [Beacon state accessors](#beacon-state-accessors)
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- [Modified `get_attestation_index`](#modified-get_attestation_index)
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<!-- END doctoc generated TOC please keep comment here to allow auto update -->
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<!-- /TOC -->
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## Introduction
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This is the beacon chain specification to move the attestation committee index outside of the signed message. For motivation, refer to [EIP-7549](https://eips.ethereum.org/EIPS/eip-7549).
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*Note:* This specification is built upon [Deneb](../../deneb/beacon_chain.md) and is under active development.
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## Containers
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### Extended containers
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#### AttestationData
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```python
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class AttestationData(Container):
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slot: Slot
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# index: CommitteeIndex # [Modified in EIP7549]
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# LMD GHOST vote
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beacon_block_root: Root
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# FFG vote
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source: Checkpoint
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target: Checkpoint
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```
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#### Attestation
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```python
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class Attestation(Container):
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aggregation_bits: Bitlist[MAX_VALIDATORS_PER_COMMITTEE]
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data: AttestationData
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index: CommitteeIndex # [New in EIP7549]
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signature: BLSSignature
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```
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## Helper functions
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### Beacon state accessors
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#### Modified `get_attestation_index`
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```python
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def get_attestation_index(attestation: Attestation) -> CommitteeIndex:
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return attestation.index
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```
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